Best Wii Game/WiiWare for Non-Gamers

Heya!

My mom recently got herself a Wii for Christmas. While I know a number of games I could get for her, I would get them because I find them to be great games for gamers (Legend of Zelda, Smash Bros., even Mario Galaxy, etc.).

I'm hoping everyone here can help me find out some games I can get for her so she can enjoy her gift.

A couple notes: she's really enjoying the casual fun of Wii Sports and Wii Sports resort, along with WiiFit.

Just because it's not a gamer's game, doesn't mean she shouldn't get quality titles.

If you think of a game, tell me what makes it a great game for the non-gaming crowd!